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Thesis is a place where people pay a solo founder monthly, suggest one experiment for them to run, and read what happened — good or bad. This is one of those results.

Rui Santos

Rui Santos

Verified backer

Paid ads and pricing experiments. Used to run growth at a marketplace. Porto.

Paid adsPricingLanding pages
What they have proposedSince 31 Mar 2026

Backers write the experiment down; the founder builds and ships it inside their own product. A result here is evidence of the backer's judgement about what to try, not of them having built it.

1
ideas submitted
1
accepted
1
run and published
How those turned out
0 wins0 inconclusive1 negative

No single score is calculated. 1 result is a short history — read the results, not the ratio.

Recent resultsNegativeSearch ads on the words people type when ready to buyApr 2026

This page is Rui Santos’s record as a backer. Their profile carries everything else they do here, including anything they run themselves.

Working with Rui Santos

Rui Santos proposes experiments here; some backers also take paid work from the founders who read them. There is no way to contact anyone through this site yet, and rather than put a button here that does nothing, we are telling you that.

When it exists it will be their choice to switch on, and any paid engagement stays ring-fenced from which idea gets picked — nobody selects their own invoice.